Home / 113,488.64-156,543.36-81,607.04

Finding the Fourth Proportional to 113,488.64, 156,543.36 and 81,607.04

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Solution

The fourth proportional to 113,488.64, 156,543.36 and 81,607.04 is: 112,566.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,488.64 : 156,543.36 = 81,607.04 : x
  2. Step 2: Convert to fraction form
    113,488.64/156,543.36 = 81,607.04/x
  3. Step 3: Cross multiply
    113,488.64x = 156,543.36 × 81,607.04
  4. Step 4: Simplify right side
    113,488.64x = 12,775,040,241.25
  5. Step 5: Solve for x
    x = 12,775,040,241.25/113,488.64
  6. Step 6: Final answer
    x = 112,566.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.